|Stylistic origins||Soul, funk, pop|
|Cultural origins||Early 1970s, United States|
|Typical instruments||Guitar, bass, piano, organ, drums, horn section, vocals|
|Derivative forms||Quiet storm, contemporary R&B|
|Philly soul, Motown sound|
Smooth soul is a subgenre of soul music that developed in the early 1970s from soul, funk and pop music in the United States. The subgenre experienced mainstream success from the time of its development to the late 1970s, before its succession by disco and quiet storm.
Smooth soul is characterized by melodic hooks, funk influence and smooth production style. Allmusic describes smooth soul as "smooth, stylish, and romantic." Unlike pop-soul, which predominantly featured dance-oriented music at the time, smooth soul was more ballad-oriented with generally romantic and seductive lyrical themes. However, its melodic hooks were ideal for crossover play, much like the former. The funk influence of smooth soul's beats also gave the subgenre its distinction from pop.
The music enjoyed commercial success during the early to mid-1970s through the works of such artists as Al Green, The Spinners, Marvin Gaye, Harold Melvin & the Blue Notes, Bill Withers, Minnie Riperton, Earth, Wind & Fire and The Stylistics. Well-known works of the smooth soul genre include Let's Get It On (1973), Spinners (1972), Just as I Am (1971) and Let's Stay Together (1972). As pop-soul had metamorphosed into disco during the late 1970s, smooth soul was eventually followed by the development of the quiet storm format.